Want to lower IAT2 temps and increase heat exchanger efficiency? Whipple designed the bolt-on dual 11" Spal high speed fans to mount to the massive high density heat exchanger in a matter of minutes. The Whipple upgrade kit comes with the pigtails required for plug and play installation along with the unique feature to be controlled by the PCM. No more roaring fans when the key is off or when you open the door.